什么是ECMAScript 6课程中的getter和setter? [英] What are getters and setters for in ECMAScript 6 classes?

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问题描述

我对ECMAScript 6类中的getter和setter的含义感到困惑。什么目的?以下是我所指的一个例子:

  class Employee {

constructor(name){
this._name = name;
}

doWork(){
return`$ {this._name}正在工作;
}

get name(){
return this._name.toUpperCase();
}

set name(newName){
if(newName){
this._name = newName;
}
}
}


解决方案

这些setter和getter可以直接使用属性(不使用括号)

  var emp = new Employee ( TruMan1); 

if(emp.name){
//在后台使用get方法
}

emp.name =新名称; //在后台使用setter

这只是设置并获取属性的值。


I am confused as to what the point of getters and setters are in ECMAScript 6 classes. What is the purpose? Below is an example I am referring to:

class Employee {

    constructor(name) {
        this._name = name;
    }

    doWork() {
        return `${this._name} is working`;
    }

    get name() {
        return this._name.toUpperCase();
    }

    set name(newName){
        if(newName){ 
            this._name = newName;
        }
    }
}

解决方案

These setter and getter allow you to use the properties directly (without using the parenthesis)

var emp = new Employee("TruMan1");

if (emp.name) { 
  // uses the get method in the background
}

emp.name = "New name"; // uses the setter in the background

This is only to set and get the value of the property.

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